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15 September 2022 | Story André Damons | Photo André Damons
Dr Osayande Evbuomwan, Prof Willy Vangu and Dr Gerrit Engelbrecht
Dr Osayande Evbuomwan, nuclear medicine specialist and Senior Lecturer, left, and Dr Gerrit Engelbrecht, Clinical Head of the Department of Nuclear Medicine at the UFS, right, with Prof Willy Vangu, Chief Specialist and Head of Nuclear Medicine at the University of the Witwatersrand, after his lecture.

There is no doubt that an institution like the University of the Free State (UFS), with its calibre and pedigree, needs a PET/CT machine (medical-imaging device that simultaneously and clearly reveals both anatomical details and metabolic processes within the body), particular in oncology, in improving the management of patients. 

This is according to Prof Willy Vangu, Chief Specialist and Head of Nuclear Medicine at the University of the Witwatersrand, who was a guest lecturer on 8 September 2022 at the Department of Nuclear Medicine at the UFS.

Positron emission tomography (PET) is a type of nuclear medicine imaging modality that measures the metabolic activity of the cells of body tissues. PET imaging is useful in the evaluation of patients with neurological, cardiac, infection, inflammation, and most importantly oncological conditions. Through its ability to detect metabolic changes very early, it can detect disease conditions that might not be easily detected on other forms of anatomical imaging.

Role of PET/CT in different clinical scenarios

In his lecture, Prof Vangu talked about the role of PET/CT in different clinical scenarios. By giving practical examples, he explained the role of PET/CT in different aspects of clinical medicine, including brain imaging for dementia, movement disorder and cerebrovascular reserve. 

“Looking at dementia, we will focus on one of diseases that is today becoming a major source of health concern, Alzheimer's disease. The latest Alzheimer's report that was published in 2018 stated that there are 50 million individuals currently suffering from Alzheimer's. They forecast that in 30 years we are going to have more than 150 million people suffering from this disease. PET/CT imaging can identify very early the typical patterns associated with all the different types of dementias, including Alzheimer's disease…”

For cardiac application, Prof Vangu said there are so many indications for PET/CT in cardiac imaging. One of the most important is the assessment of myocardial viability, in patients who have suffered from cardiomyopathy due to ischemic heart disease. PET/CT offers a noninvasive method of identifying viable myocardium that would benefit from revascularisation, with a very high diagnostic accuracy. 

Prof Vangu, who is also the head of nuclear medicine at the Charlotte Maxeke Johannesburg Academic and Chris Hani Baragwanath hospitals as well as head of the department for radiation sciences at the University of the Witwatersrand, said PET has been around for many years and is not something new. However, in clinical practice, PET imaging became significant with a breakthrough that occurred with the production of the glucose analogue tracer, 18F-fluorodeoxyglucose (FDG). This tracer in PET/CT imaging has revolutionised the management of cancer patients for the oncologist. It offers the ability of more accurate cancer staging, assessment of treatment response, assessment of disease recurrence and in some situations, surveillance. It has the ability to predict early which cancer patients will benefit from a particular drug, thereby giving the oncologist an idea on either to de-escalate treatment or change to a second line regimen very early on in the management. 

PET-CT scan imaging machine

An internet example of an image taken by a PET/CT machine. Photo for illustration: A PET/CT Imaging machine.


PET/CT came onto the market only in the year 2001, when it was launched for the first time by David Townsend (a physicist) and Ronald Nutt (electrical engineer). As at today, almost every institution in the country has at least one PET/CT machine.


“Looking at clinical applications, which is really the crux of the lecture today, there are so many clinical applications to talk about. You need a full week of a PET/CT symposium to go through all of them (and) maybe that might not even be enough. We can at least from this talk have an idea on how PET/CT can be applied in clinical medicine,” said Prof Vangu.

No other road for the university but to get a PET/CT machine

He also showed the impact and results that PET/CT imaging had in the management of infection and inflammation including TB. He said the role of PET/CT in TB is for monitoring of treatment, identification of extrapulmonary TB and prognosis. 

In concluding his lecture, he said there is no other road for the university but to get a PET/CT machine. “There is no argument about it. The institution needs it to improve the management of patients, especially the oncology and cardiology patients. Confidently making the decision on which patients to treat, how to treat them, identifying and evaluating their true response to therapy requires a PET/CT machine.

“I am happy to hear that the policy- and decisions-makers in the province and the university are looking forward to having a PET/CT machine,” he said later. 

Dr Osayande Evbuomwan, nuclear medicine specialist and Senior Lecturer, and Dr Gerrit Engelbrecht, Clinical Head of the Department of Nuclear Medicine at the UFS, are both looking forward of having a PET/CT in the department because in addition to its use in clinical setting, it has a huge role to play in research and training postgraduate students, as PET/CT imaging makes up a huge chunk of the postgraduate training curriculum

News Archive

SA universities are becoming the battlegrounds for political gain
2010-11-02

Prof. Kalie Strydom.

No worthwhile contribution can be made to higher education excellence if you do not understand and acknowledge the devastating, but unfortunately unavoidable role of party politics in the system and universities of higher education and training (HET).

This statement was made by Prof. Kalie Strydom during his valedictory lecture made on the Main Campus of the University of the Free State (UFS) in Bloemfontein recently.

Prof. Strydom, who was awarded an Honorary Doctorate by the UFS in 2010, presented a lecture on the theme: The Long Walk to Higher Education and Training Excellence: The Struggle of Comrades and Racists. He provided perspectives on politics in higher education and training (HET) and shared different examples explaining the meaning of excellence in HET in relation to politics.

“At the HET systems level I was fortunate to participate in the deliberations in the early nineties to prepare policy perspectives that could be used by the ANC in HET policy making after the 1994 elections.  At these deliberations one of the important issues discussed was the typical educational and training pyramid recognised in many countries, to establish and maintain successful education and training. The educational pyramid in successful countries was compared to the SA “inverted” pyramid that had already originated during apartheid for all races, but unfortunately exploded during the 16 years of democracy to a dangerous situation of 3 million out-of school and post-school youth with very few education and training opportunities,” he said.

In his lecture, Prof. Strydom answered questions like: Why could we as higher educationists not persuade the new democratically elected government to create a successful education and training pyramid with a strong intermediate college sector in the nineties?  What was the politics like in the early and late nineties about disallowing the acceptance of the successful pyramid of education and training?  Why do we only now in the latest DHET strategic planning 2010–2015 have this successful pyramid as a basis for policymaking and planning?

At an institutional level he explained the role of politics by referring to the Reitz incident at the UFS and the infamous Soudien report on racism in higher education in South Africa highlighting explosive racial situations in our universities and the country.  “To understand this situation we need to acknowledge that we are battling with complex biases influencing the racial situation,” he said.

“White and black, staff and students at our universities are constantly battling with the legacy of the past which is being used, abused and conveniently forgotten, as well as critical events that white and black experience every day of their lives, feeding polarisation of extreme views while eroding common ground.  Examples vary from the indoctrination and prejudice that is continued within most homes, churches and schools; mass media full of murder, rape, corruption; political parties skewing difficult issues for indiscrete political gain; to frustrating non-delivery in almost all spheres of life which frustrates and irritates everyone, all feeding racial stereo typing and prejudice,” said Prof. Strydom.

A South African philosopher, Prof. Willie Esterhuyse, recently used the metaphor of an “Elephant in our lounge” to describe the syndrome of racism that is part of the lives of white and black South Africans in very different ways. He indicated that all of us are aware of the elephant, but we choose not to talk about it, an attitude described by Ruth Frankenberg as ‘colour evasiveness’, which denies the nature and scope of the problem.

Constructs related to race are so contentious that most stakeholders and role-players are unwilling to confront the meanings that they assign to very prominent dimensions of their experience; neither does management at the institutions have enough staff (higher educationists?) with the competencies to interrogate these meanings, or generate shared meanings amongst staff and students (common ground).  A good example that could be compared with “the elephant in our lounge” remark is the recent paper of Prof. Jonathan Jansen, Rector and Vice-Chancellor of the UFS on race categorisation in education and training.

According to Prof. Strydom, universities in South Africa are increasingly becoming the battlegrounds for political gain which creates a polarised atmosphere on campuses and crowds out the moderate middle ground, thereby subverting the role and function of the university as an institution within a specific context, interpreted globally and locally. 

Striving for excellence, mostly free from the negative influences of politics, in HET, from the point of view of the higher educationist, is that we should, through comparative literature review and research, re-conceptualise the university as an institution in a specific context.  This entails carefully considering environment and the positioning of the university leading to a specific institutional culture and recognising the fact that institutional cultures are complicated by many subcultures in academe (faculties) and student life (residences/new generations of commuter students).

Another way forward in striving for excellence, mostly free from politics, is to ensure that we understand the complexities of governing a university better.  D.W. Leslie (2003) mentions formidable tasks related to governance influenced by politics:

  • Balancing legitimacy and effectiveness.
  • Leading along two dimensions: getting work done and engaging people.
  • Differentiating between formal university structures and the functions of universities as they adapt and evolve.
  • Bridging the divergence between cultural and operational imperatives of the bureaucratic and professional sides of the university.

Prof. Strydom concluded by stating that it is possible to continue with an almost never ending list of important themes in HE studies adding perspectives on why it is so easy to misuse universities for politics instead of recognising our responsibility to carefully consider contributions to transformation in such an immensely complicated institution as the university within a higher education and training system. 

Media Release
Issued by: Lacea Loader
Director: Strategic Communication (acting)
Tel: 051 401 2584
Cell: 083 645 2454
E-mail: loaderl@ufs.ac.za
29 October 2010

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